- spiffy-group #!optional name-or-gidparameter
The name or GID of a group to switch to just after binding the port. This only works if you start Spiffy as root, so it can bind port 80 and then drop privileges. If #f, it will be set to the primary group of spiffy-user if the user was selected. Otherwise, no change will occur. Defaults to #f.
If you set this to non-#f, you'll need to install the posix-groups egg, otherwise a runtime exception is raised.